Interesting question, of course, everything doesn’t happen at the snap of a finger. Relationships between a person and an animal develop in the same way as between people (you just need to be 10 times more attentive to your partner in order to understand his/her body language), over time you will understand each other without words (this applies not only to moments of intimacy, but and to normal situations). A strong connection appears when you and your partner are simply happy to be around, and not just constantly feel the desire to have sex(yes, just like with people). Regarding other sexual partners, for what are they? My lover doesn't pay attention to anyone but me, so why should I do the opposite...